When the sky first tore three years ago, no one could make sense of it. The weather was clear, the clouds were calm. But then a scratch appeared. A massive rift, as if someone had taken a knife to the sky, like you could see into space itself. That day, science fell silent, religion fell silent, the internet fell silent. Everyone just looked up.
And then the gates opened.
It first appeared in Japan. Then Poland, China, the Democratic Republic of Congo... By the time it reached Turkey, panic had already given way to organized fear. Everyone knew by then: those who passed through these gates transformed into something else. They gained a System. They acquired abilities that made them stronger than normal humans.
For some, this was an opportunity. For others... a death sentence.
With the opening of the gates, the world order was fundamentally shaken. As professions spread rapidly between gates, armies no longer fought each other, but began to battle creatures emerging from these gates.
The first cities to be attacked were in Japan. However, thanks to the army's swift response and international aid, the creatures were pushed back into their gates. Then the army sent a special team through the gate. What initially seemed like a suicide mission unexpectedly turned into a discovery that would change the fate of all humanity.
Cities where gates opened quickly became tourism centers. Adventurers, researchers, and curious people from all over the world began flocking to these cities. Their host countries made good use of this unexpected opportunity by turning gate regions into special economic and cultural centers. Materials and items extracted from the gates not only held scientific value but became valuable commodities that saw huge demand worldwide and fetched astronomical prices.
But this wasn't the gates' only feature. Each gate could connect to others like a complex network. Thanks to this feature, people could travel between continents in minutes instead of hours-long flights. This situation completely changed human mobility across the world by removing physical barriers to global trade and cultural interaction.
In Turkey, the first gate opened in the northwest of Adana, near the Taurus Mountains. Due to its location being both defensible and isolatable, the state quickly took control of the gate. The area became known to both military and civilians as "Gate 05".
However, with the opening of the gate, fundamental changes were made in the Turkish Armed Forces. It was early understood that classical military training programs would be insufficient. Therefore, an intensive training program called Mandatory Gate Service, lasting two years, was implemented. This training included both traditional military discipline and heavy simulations on potential system compatibility, artificial dungeons, training with creatures, and system protocol tests.
The aim of this program wasn't just to train soldiers, but to create "compatible individuals" who could survive the gates. These individuals would be evaluated by the system and would choose their own class.